Miter-box.



L. D. FLETCHER.

MITER BOX. APPLICATION FILED MAR. 21. 1913.

Patented May 26, 191$ 2 SHEETS-SHEET l.

LQIQENZO D-FLETc'uER L. D. FLETCHER. MITER BOX.

APPLICATION FILED MAR. 21, 1913.

' Patented May 26, 1914.

2 SHEETS-SHEET 2.

Suva/14km Lo r-z ENZO D- FLETC HER 12 I 291 2719 2 .12 fi LORENZO 3).FLETCHER, OF H, NAXER VIRGINIA.

Mrrnnfnon.

To all whom it may concern Be it known that I, Lounnzo D. FLETCHER.citizen of the United States, residing at Honaker, in the county ofRussell and State of Virginia, have invented certain new and usefulImprovements in Miter-Boxes, of:

which the following is a specification, reference being had to theaccompanying drawings.

This invention relates to improvements in miter boxes and has for itsprimary object to provide a comparatively simple device of this-character whereby the material to be sawed may be easily and quicklyadjusted in the box in order to cut the same at a desired angle.

Another object of the invention resides in the provision of a pluralityof, saw. guides defining the corners of a parallelogram, means formoving one pair of said saw guides inwardly or outwardly from a com-.mon center, and additional material holding means arranged upon andmovable with relation to said saw guides. A still further object of theinvention is to produce a device of the above character which isextremely strong and durable in construction, reliable and efiicient inoperation and may be manufactured at compare-- tively small cost.

With the above and other objects in view as will become apparent as thedescription proceeds, the invention consists in certain constructions,combinations and arrangements of the parts that I shall hereinafterfully describe and claim. F or a full understanding of the invention,reference is to be had to the following description andaccompanyingdrawings, in which V Figure 1 is a top plan view of a miter boxembodying thep'resent invention; Fig. 2 is a section taken on the line2'2 of Fig. 1; Fig. 3 is a top plan view, the work table and materialpositioning members being removed. F-ig. 4 is a side elevation, partlyin section. I

Referring in detail. to the drawings, 5 designates a rectangular metalframe which is supported at its corners by means of the legs orstandards 6. The diagonally op posed corners of this frame are connectedby the parallel guide bars 7, said guide bars extending for somedistancebeyond. the corners of the frame as clearly shown inSpecification of Letters Patent.

Application filed March 21, 1913.

Patent-ea May as, rare. Serial No. 756,049.

Fig. 3, These bars at their ends are connected by the plates 8 in whichthe ends of a rectangular guide rod 9 are fixed. The parallel bars 7 arealso connected midway between. their ends by a bearing plate 10 withwhich the pivot stud 11 is integrally formed. The other diagonallyopposed corners of the frame are provided with stationary saw guides 12,said saw guides having the usual. saw blade receiving recesses and beingof tubular form, to receive the post of the saw frame. Between theparallel bars 'Tthe slides 13 are mounted, said slides being providedupontheir side walls with ribs 14- to be received in channels or grooves15 formed in the inner faces of the guide bars 7. These slides alsocarry tubular saw guides 16. Upon the pivot stud 11, the plate 17 isjournaled for rotative movement and is provided with oppositelyextending arms 18, to which the inner ends of the linlt bars 19 arepivotally connected. The other or outer ends of these linkbars arepivotally mounted upon the respective slide members 13. The slides areprovided with longitudinal openings to loosely receive the guide rod 9.The adjusting screw 20 is rotatably mounted in one of the plates 8connecting the ends of the guide bars 7, said screw having threadedengagement in one of the slides 13. This slide carries a pointer orfinger 21 which is movable over the graduated surface of a scale plate22- fixed to the frame. Upon the plate 8, a

cam lever 23 is pivotally mounted and is adapted for binding engagementwith a collar 24: fixed upon the adjusting screw 21' whereby said screwmay be held in its adjusted position against turning movement.

25 designates the work positioning bars. These bars are arranged uponopposite sides of the frame 5 and at one of their ends are looselymounted upon the I movable saw guides 16. Each of said bars adjacent itsother end is provided with a longitudinal slot 26 through which one ofthe stationary saw guides 12 extends, whereby said an may be movedfreely upon said saw guides with respect thereto when the movable, sawguides are adjusted. lach of the bars 25 is provided adjacent its inneredge with a ver tical flange 27 for engagement with one edge of theboard to be sawed. Theseflanges are recessed at spaced points asindicated at 28 to accommodate the movable and stationary saw guides andpermit of movement of the clamping members with respect ereto, Upon theframe 5,, the work supporting table 29 is secured. The longitudinaledges of this table intermediate of its ends are obliquely cut inparallel relation as shown at 30 to accommodate the movableor slidingsaw guides 16 andthe work clamping bars 25. From the ends of theseobliquely disposed edges 30 of the table, the remaining longitudinaledge port-ions thereof are angularly cut in' relatively oppositedirections as shown at 31 and 32 respectively. The cut away corners ofthe table indicated by the angular edges 31 accommodate the verticallydisposed clamping flanges 27 in the turning movement of the bar 25 uponthe stationary saw guides 12. These flanges extend above the uppersurface of the table 29 and the work is held in engagement therewithwhile the same is being mitered.

From the foregoing description, the construction and manner of operationof the device will be clearly understood. As-shown in Fig. 3 of thedrawin s, the sliding knees 16 are set for a cut of forty-five degrees,and in order to cut the material at a less angle, the knees 16 are movedinwardly toward the central pivot stud 11 by turning the adjusting'screw20, it being understood that the saw is mounted in said stationaryknees. When the knees 16 are so disposed, the angle to which thematerial will be cut with the saw in the knees 16 would be double thatindicated uponthe scale plate 22. For instance, assuming that thesliding knee has been moved inwardly, so that the pointer 21 indicates30 degrees upon the scale plate,

the material will be cut at an angle of sixty degrees when the saw isdisposed in the knees 16 and at an angle of thirty degrees when thesameis mounted in the stationary knees 12. The reverse is the case whe thesliding knees are adjusted outwardly beyond the forty-five degree mark.If de sired, the graduations need'be extended onl inwardly from theforty-five degree mar and the outward adjustment of the knees 16eliminated. It is obvious, that in the movement of the knees 16, thematerial held against the bar 25 is also moved, the slotted ends of theclamping bars moving longitudinally upon the stationary knees 12. Inthis manner, it will be seen that the work may be properly adjusteduponthe supporting table 29 so as to cut the same at the desired angle.

By means of my improved miter box, considerable time and labor is savedin the mitering of the work. Owing to the fact that but comparativelyfew parts are employed in the construction of the device, it will beappreciated that the same can be produced at small manufacturing costand is highly durable and efficient in practical use.

While I have shown and described the preerred construction andarrangement of the several elements employed, it will be understood thatthe invent-ion is susceptible of considerable modification thereinwithout departing from the essential features or sacrificing any of theadvantages thereof.

Having thus described the invention, what is claimed is:

A miter box comprising a frame, parallel guide bars extended diagonallyacross the frame, slides mounted between the guide bars and adapted tomove toward and from each other, means operatively connected and a worktable interposed between the 0-,

iitioning bars and disposed above the guide ars.

In testimony whereof I hereunto aifix my signature, in the presence oftwo witnesses.

LORENZO D. FLETCHER.

Witnesses:

M. O. LYDDANE, CHAS. M. BIROKHEAD.

